This is better than their instructions just marginally. 1. CMD ^ P 2. Type "install" and select "Package Control: Install Package" 3. Type "Afterflow"

This is better than their instructions just marginally. 1. CMD ^ P 2. Type "install" and select "Package Control: Install Package" 3. Type "Afterflow" and select "Theme - Afterglow" 4. Press: Command + , (to go into settings). 5. Paste the two lines from Github page, add any additional settings and restart sublime. edit: Ah I just saw your update, previewing is a nice little feature for sure, especially when you're not sure how they handle colors for the languages you use most often. Sounds nice